Highlights: Make simplification more robust when complexity limits are reached reduces loop iteration counter to 6 before bailing out We weren’t using the correct initializerAstNodeName in two places Tease apart expressions vs. statements for operation descriptors Simplify equality expressions where types are known Refactor AbstractObjectValue to use evaluateWithAbstractConditional Allow invalid render return values in the React reconciler update Babel 7 to stable release Speed up simplifier by using an implication cache per path branch Add basic support for throws in React